Keywords: Great Lakes BG-1 VB-4M NAN3-88.jpg A U S Marine Corps Great Lakes BG-1 of Marine bombing squadron VB-4M in 1936-37 U S Navy Naval Aviation News March-April 1988 http //www history navy mil/nan/backissues/1980s/1988/ma88 pdf 1936-37 USN PD-USGov-Military-Navy Great Lakes BG |